css美化有序列表，贴出部分css代码 <ol > <li>先涂粉底再涂防晒</li> <li>先涂防晒再涂粉底</li> </ol> <!doctype html> <html> <head> <title>CSS3 ordered list styles - demo</title> <style> body{ margin: 40px auto; width: 500px; } /* -------------------------------------- */ ol{ counter-reset: li; list-style: none; *list-style: decimal; font: 15px 'trebuchet MS', 'lucida sans'; padding: 0; margin-bottom: 4em; text-shadow: 0 1px 0 rgba(255,255,255,.5); } ol ol{ margin: 0 0 0 2em; } /* -------------------------------------- */
上传时间： 2018-08-22
上传用户：53660542
AMPLIFIER.OLB ARITHMETIC.OLB ATOD.OLB BUS DRIVERTRANSCEIVER.OLB CAPSYM.OLB CONNECTOR.OLB COUNTER.OLB DISCRETE.OLB 等
上传时间： 2020-03-03
上传用户：llik
It is commonly accepted today that optical fiber communications have revolutionized telecommunications. Indeed, dramatic changes have been induced in the way we interact with our relatives, friends, and colleagues: we retrieve information, we entertain and educate ourselves, we buy and sell, we organize our activities, and so on, in a long list of activities. Optical fiber systems initially allowed for a significant curb in the cost of transmission and later on they sparked the process of a major rethinking regarding some, generation-old, telecommunication concepts like the (OSI)-layer definition, the lack of cross-layer dependency, the oversegmentation and overfragmentation of telecommunica- tions networks, and so on.
上传时间： 2020-05-27
上传用户：shancjb
This books presents the research work of COST 273 Towards Mobile Broadband Multimedia Networks, hence, it reports on the work performed and on the results achieved within the project by its participants. The material presented here corresponds to the results obtained in four years of collaborative work by more than 350 researchers from 137 institutions (universities, operators, manufacturers, regulators, independent laboratories and others – a full list is provided in Appendix B) belonging to 29 countries (mainly European, but also from Asia and North America) in the area of mobileradio. Theobjectiveofpublishingtheseresultsasabookisessentiallytomakethemavailable to an audience wider than the project. In fact, it just follows a ‘tradition’ of previous COST Actions in this area of telecommunications, i.e. COST 207, 231 and 259.
标签： Multimedia Techniques Broadband Networks Mobile
上传时间： 2020-05-30
上传用户：shancjb
This chapter provides extensive coverage of existing mobile wireless technologies. Much of the emphasis is on the highly anticipated 3G cellular networks and widely deployed wireless local area networks (LANs), as the next-generation smart phones are likely to offer at least these two types of connectivity. Other wireless technologies that either have already been commercialized or are undergoing active research and standardization are introduced as well. Because standardization plays a crucial role in developing a new technology and a market, throughout the discussion standards organizations and industry forums or consortiums of some technologies are introduced. In addition, the last section of this chapter presents a list of standards in the wireless arena.
标签： Networking Wireless Complete
上传时间： 2020-06-01
上传用户：shancjb
In the field of electricity, electrostatics, and circuit theory, there are many discoveries and accomplishments that have lead to the foundation of the field of electrostatic discharge (ESD) phenomenon. Below is a chronological list of key events that moved the field of electrostatics forward:
上传时间： 2020-06-05
上传用户：shancjb
QI无线充电方案GPMQ8005评估板CADENCE设计原理图+ PADS设计PCB文件+设计调试文档资料,硬件2层板设计，大小为62*50mm, 可以做为你的学习设计参考。QY-8005A评估板CADENCE设计原理图+ PADS设计PCB文件.zip5V 方案亮灯方式.txtGeneralplus QI 5V TX Demo Test List V1.0.17_20190806_102645.xlsGeneralplus 无线充电5V方案 PCB Layout Guide V1.1.pdfGeneralplus 无线充电5V方案调试说明 V1.1.pdfGPMQ8005AGPMQ80XXA_Spec _V03.pdfGPMQ8101A WPRX Module_DS_V01.pdfQI无线充电标准中文版.docQY-8005A
上传时间： 2021-10-20
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NCP1399 是高性能电流模式控制器，半桥谐 变换器。此控制器实现 600 V 门驱动、 简化布 局和减少外部组件计数 。built - in 和 Brown - Out 输入函数简化了执行在所有应用程序的控制器。 在 PFC 前阶段的应用 NCP1399 需要设有专用的 输出驱动 PFC 前级控制器。此功能专用 skip-mode 技术进一步提高轻负载效率的整个应 用程序。 NCP1399 提供全套的保护功能允许安全 运行在任何应用程序中。这包括：过载保护，过 流保护以防止硬开关周期， brown- out 检测，打 开光电耦合器检测， 死区自动调整， 过电压（OVP） 和 (OTP) 过温保护
上传时间： 2021-12-17
上传用户：qingfengchizhu
1 准备1.1 硬件和编译环境1.1.1 开发板硬件选用PIC18F25K22，在淘宝上可以买到开发板， LIXUE 工作室出品的。价格在140 左右。1.1.2 IDE编译环境为MPLAB IDE V8.87C 编译器为MCC18，版本号为3.38（以上编译环境均由开发板中的光盘提供）1.1.3 仿真器PICkit3，同一家店买的1.2 FreeRTOS 相关移植文件准备1.2.1 下载移植文件在Microchip 官网下载通用移植文件http://embeddedcodesource.com/rtos我是选了下面这个，点击download 即可下载，解压后里面存在如下文件，1.2.2 查找有用的文件下载到的FreeRTOS为6.0.4 版本1）找到三个.c 文件如上图所示，解压后，主要的文件在FreeRTOS\Source文件夹中，如下所示：其中list.c ， queue.c ，tasks.c 无需修改，作为主要的FreeRTOS的文件，2）找到与.c 文件对应的.h 文件如下图所示，与之对应的在FreeRTOS\Source\include文件夹中：找到list.h ， queue.h ，tasks.h，也无需修改。3）另外还有用的文件包括FreeRTOS.h , portable.h ，projdef.h4）找到heap_1.c找到FreeRTOS\Source\portable\MemMang文件夹里面5）移植修改文件主要包括port.c portmacro.h，在找到FreeRTOS\Source\portable\MPLAB\PIC18F文件夹里面6）其他文件在FreeRTOS_C18\FreeRTOS PrimerEjemplo文件夹中包含了主体的Demo 工程文件，关注FreeRTOSConfig.h，还有两个.lkr 链接文件。2 示例Demo 说明点开FreeRTOS_C18\FreeRTOS PrimerEjemplo 文件夹中的.mcw 工程文件，发现提示丢失文件，如下所示，其实是定位出现文件，依次对应步骤1.2.2 中的各个文件夹位置查找，重新定位即可，定位好之后，编译即可通过，
标签： freertos
上传时间： 2022-06-24
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LittlevGL 是一个开源免费的 GUI，支持触摸屏操作，移植简单方便，开发者一直在不断完善更新。 LittlevGL 自带了丰富的控件：窗口、按键、标签、 list、图表等，还可以自定义控件；支持很多特效：透明、阴影、自动显示隐藏滚动条、界面切换动画、图标打开关闭动画、平滑的拖拽控件、分层显示、反锯齿、仅耗少量内存的字体等等。LittlevGL 常见于 MCU 级别的设备，支持各类输入输出接口与芯片，支持使用 GPU，以 C 编写。
上传时间： 2022-06-28
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